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Help Needed Please - R32 Rb25 De Conversion?

Ineedarwd

By Ineedarwd,
in Engines & Forced Induction

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Ineedarwd Apprentice

Ineedarwd

Posted
Posted

Hi all, im about to undertake a conversion on my 32. I have a black gtst type m rb20det and want to put a 25de neo into it, i have done a fair bit of research and still dont know whats going on i have asked a few mechanics and still everyone gives me a different answer so please your help/advice would be much appriciated!!

I have bought a rb25de neo with 78000ks with loom and ecu, i still want to run the rb20det box if this is still possible, just wanted to know exactly what is needed to be changed/customized for the conversion.

Yes the only reason i am doing this is because im a p plater and i just kept getting introuble driving it turbo'd. i will be doing all the work with another two friends who have done engine conversions a fair bit.

once again your help/advice would be much appriciated!!

GTSBoy Grand Master

GTSBoy

Posted
Posted

R32 RB25DE ECU will not run the VCT on the Neo, so you would need a window switch of some sort to make that work.

I personally would do the complete R34 loom into R32 conversion. There's a fair bit of re-wiring required though.

The other thing that will entertain is the decision on whether to keep the crappy old RB20 power steer pump and air-con compressor, or to switch to the lovely newer R34 ones. If you keep the old crap, you don't have to do any plumbing. But if you swap, you need new lines made or cut'n'shut. There's a lot of time and $$ hiding in things like that.

You can use the RB20DET gearbag. It's the same box as the NeoDE's anyway.

WMDC35 Experienced

WMDC35

Posted
Posted

i used a cheap kitset window switch for vct, but even with it disconnected it ran fine, it's only de so whatever's quicker & easier, if you can do the wiring +! on the neo loom & ecu, also with 32 loom ignitor needs removing or get the old coils in there

  • 2 weeks later...
A Grave Digger Enthusiast

A Grave Digger

Posted
Posted

Lads, just brought a R32 4 door off a bloke today, its got a 25 neo in it, but its still 4 stud. Its got the correct mod plates for the engine and stuff.

I thought the brakes had to be upgraded if you changed a N/A to a Turbo though?

GTSBoy Grand Master

GTSBoy

Posted
Posted

If the Neo in it is a turbo, then yes, you will definitely need at least R33 brakes. Well, you would in SA. Hell, in SA, you need to upgrade to R33 brakes even from an R32 turbo, let alone NA.

I wouldn't take my word on it for QLD. But QLD is worse/nastier, so I'd assume you'd need at least R33 brakes. There is no way that it is legal with original sliding calipers and rotors unless some foolish engineer decided to sign off on it.

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